Envelop.



F. C.SCHAEFFLER.

ENVELOP.

APPLICATION FILED Aus.19, 1-91-6.

Patented June 26, 1917.

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FRANK C. SCHAEFFLER, OF HUNTINGTON, NEW YORK.

ENVELOP.

Specification of Letters Patent.

Patented June 26, 1917.

Application led. August 19, 1916. Serial No. 115,752.

To aZZ 'whom t may concern:

Be it known that I, FRANK C. SoHAEFrLER, a citizen of the United States,and resident of Huntington, in the county of Su'tlolk and State of NewYork, have invented new and useful Improvements in Envelops, of whichthe following is a specification.

This invention relates to an envelop of novel construction, which isadapted more particularly to be used between the several departments oflarger business concerns. IVith envelops of this class, it has beencustomary to deliver the papers from one department in envelopsaddressed to the other department2 which envelops were destroyed uponreceipt. Papers from the second department were delivered to the rstdepartment in other envelops, which were also destroyed, thus involvinga great waste of stationery. By my invention inter-departmenttransactions may be carried on in the same envelops, their constructionbeing such that the address may be readily changed from one departmentto the other, so that they may shuttle between the same for anindefinite period of time. In this way expenses are reduced,manipulation is sim` plilied, andthe accumulation of waste 1s avoided.

In the accompanying drawing:

Figure 1 is a front view of an envelop embodying my invention;

Fig. 2 a similar view showing a different adjustment; l

Fig. 3 a front View with the Hap opened;

Fig. 4 an enlarged longitudinal section of Fig. 1, and

Fig. 5 a similar section of Fig. 2.

The body 1 of the envelop is of oblong or other form and provided withan ungummed foldable closing flap 2 having parallel edges. The front 3of the envelop is provided with two parallel transverse slits 4, 5,adapted for the reception of flap 2, and forming between them atransverse band 6, integral with the front. This band carries the legendor designation 7 of one of the two inter-departments, between which theenvelop is to: travel back and forth, the drawing showing Copies of thispatent may 'be obtained for ve cents each, by addressing the it to bemarked, by way of example, with the words John Jones, Claim Dept.

The body of the flap 2 carries on its front the legend or designation 8of the second department, which by way of example is shown to read rlTom Brown, Credit Dept. The correlation of the parts is such that thedistance of the legend 7 from the root or hinge of flap 2, issubstantially equal to the distance of the legend 8 from such hinge, sothat when the flap is closed the legend S will either overlie orunderlie band 6. When the charged envelop is transmitted from the rstdepartment to the second department, the end iap 2, is passed throughthe lower slit 5, z'. e. the slit farthest from hinge 9. In this way thebody of the flap will overlie band 6, and blanket the legend 7 of thelatter while the legend 8 on the flap will be fully exposed (Figs. 2 and5).

Vhen the charged envelop is returned from the second department to thefirst department, the end flap 2 is passed through the upper slit 4, z'.e. the slit nearest hinge 9. In this way, band 6 will overlie andblanket legend 8, of the flap, while the legend 7 of the band will beexposed (Figs. l and 4).

It will be seen that by my invention, the address on the envelop may bechanged in a most simple manner, so that the envelop is well adapted forinter-department and similar transactions.

I claim:

l. An envelop having a front provided with a pair of slits to form aband, a rst legend on said band, a liap adapted to be passed througheither one of the slits, and a second legend on the flap, said irstnamed legend being adapted to be blanketed by the flap, while the secondnamed legend is adapted to be blanketed by the band.

2. An envelop having a front provided with a pair of slits to form aband, a lirst legend on said band, a hinged flap adapted to be passedthrough either one of the slits, and a second legend on the flap, thetwo legends being arranged at substantially equal vdistances from thehinge of the flap.

FRANK C. SCI-IAEFFLER.

Commissioner of Patents,

Washington, D. C.

